/*
 * Copyright (C) 2013 tangzhi
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
package org.tangzsoft.pdmviewer.storage;

import org.slf4j.Logger;
import org.tangzsoft.pdmviewer.PdmViewerContext;
import org.tangzsoft.pdmviewer.storage.impl.StorageImpl;
import org.tangzsoft.pdmviewer.storage.jdbc.JdbcStorageProviderImpl;
import org.tangzsoft.pdmviewer.storage.memory.MemoryStorageProviderImpl;
import org.tangzsoft.pdmviewer.utils.LogFactory;
import org.tangzsoft.pdmviewer.utils.config.ConfigConstants;
import org.tangzsoft.pdmviewer.utils.config.MappedPropertySet;
import org.tangzsoft.pdmviewer.utils.config.PropertySet;

/**
 *
 * @author tangzhi
 */
public class StorageFactory {
    public Storage createStorage() {
        
        Logger log = LogFactory.getLogger(this.getClass());
        
        //根据配置文件返回 存储驱动及其配置参数
        PropertySet props = PdmViewerContext.getInstance().getPropertySet();
        PropertySet storageProps = new MappedPropertySet ( ConfigConstants.CONFIG_STORAGE, props );
        
        Class providerClass = storageProps.getClass(ConfigConstants.CONFIG_STORAGE_PROVIDER, MemoryStorageProviderImpl.class);
        try {
            StorageProvider provider = (StorageProvider) providerClass.newInstance();
            PropertySet storageConfigProps = new MappedPropertySet(ConfigConstants.CONFIG_STORAGE_CONFIG, storageProps);
            return new StorageImpl( provider, storageConfigProps );
        } catch (InstantiationException e) {
            log.error("InstantiationException on Storage", e);
            return null;
        } catch (IllegalAccessException e) {
            log.error("IllegalAccessException on Storage", e);
            return null;
        }
        
    }
}
